Xenon arc lamp
US6316867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Oct 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/86
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low-cost ceramic arc lamp comprises an optical coating on a sapphire window, a window shell flange, and a body sleeve. A gas-fill tubulation attaches to the side of the body sleeve and permits a charge of xenon gas to be injected during manufacture. This contrasts with the prior art where the xenon gas is introduced through the anode base. A single-piece strut assembly is used that is compatible with mass-production techniques. The single-piece strut assembly supports and suspends a cathode inside an elliptical reflector. An anode flange replaces a more conventional shell, copper anode base, and base support ring. A tungsten anode completes the lamp. All of these parts are brazed together in an assembly process that is far less complex than the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.